president joe biden, congressman paul ryan facing off. special coverage next thursday night. >>> just ahead, developing situation along the turkey-syria border. hours after an exchange of artillery fire, turkey's government holds an emergency session giving the green light for their troops to enter syria. ♪ ♪ introducing a stunning work of technology. ♪ introducing the entirely new lexus es. and the first ever es hybrid. this is the pursuit of perfection. >>> emergency meetings are taking place in the international community to calm the tensions now between syria and turkey. this after five turks were killed in a home along the border there. victims of syrian artillery fire. the turks retaliated. this is the first time for them. killing several syrian soldiers. syria apologized today for hitting this turkish town and promised it would not happen again and then there was this. this is a tweet from a senior adviser to turkey's prime minister tweeting, quote, turkey has no interest in a war with syr syria. but turkey is capable of protecting its borders and will retaliate when necessary.